
@mixin bg-image($url) {
    background-image: url($url + "@2x.png");
    background-repeat: no-repeat;
    background-size: 100%;
    @media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio: 3) {
      background-image: url($url + "@3x.png");
      background-repeat: no-repeat;
      background-size: 100%;
    }
}

@mixin wechat-font-family{
    font-family: $font_family;
}